fix: enable kernel quota and loop support

Author: kvinwang

os/yocto/layers/meta-dstack/recipes-kernel/linux/files/dstack.cfg

@@ -19,6 +19,14 @@ CONFIG_ISO9660_FS=y
 CONFIG_WIREGUARD=y
 CONFIG_TMPFS_POSIX_ACL=y
 CONFIG_TMPFS_XATTR=y
+
+# Enforce per-directory limits on shared ext4 data disks.
+CONFIG_QUOTA=y
+CONFIG_QFMT_V2=y
+
+# Support filesystem images used to isolate workload storage.
+CONFIG_BLK_DEV_LOOP=y
+
 CONFIG_NR_CPUS=512
 
 # BPF